#3F53D9#3F53D9

#3F53D9 is a mid, highly saturated blue. Relative luminance 0.123; OKLCH L 51.1% C 0.205 H 270.7°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#3F53D9
RGB	rgb(63, 83, 217)
HSL	hsl(232, 67%, 55%)
HSV	hsv(232, 71%, 85%)
CMYK	cmyk(71%, 61.8%, 0%, 14.9%)
CIE-LAB	lab(41.61, 37.00, -70.84)
CIE-LCH	lch(41.61, 79.92, 297.58°)
OKLab	oklab(51.13% 0.0025 -0.2045)
OKLCH	oklch(51.13% 0.205 270.7)
XYZ	xyz(17.6633, 12.2512, 67.0660)
Luminance	0.1225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F53D9 #D9C53F

analogous

#3FA0D9 #3F53D9 #783FD9

triadic

#3F53D9 #D93F53 #53D93F

tetradic

#3F53D9 #D93FA0 #D9C53F #3FD978

square

#3F53D9 #D93FA0 #D9C53F #3FD978

split-complementary

#3F53D9 #D9783F #A0D93F

monochromatic

#1A2884 #2437B7 #3F53D9 #7281E3 #A5AFED

Accessibility & contrast

On white

6.09

#3F53D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#3F53D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F53D9

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F53D9	#FFFFFF	#000000	##FFFFFF
##3F53D9	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DD

Deuteranopia (green-blind)

#005BD6

Tritanopia (blue-blind)

#00758E

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f53d9;
/* rgb */ color: rgb(63, 83, 217);
/* oklch */ color: oklch(51.1% 0.205 270.7);

Tailwind

colors: {
  custom: {
    50: '#8883e6',
    500: '#3f53d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f53d9;
$custom-light: #8883e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f53d9",
  "rgb": {
    "r": 63,
    "g": 83,
    "b": 217
  },
  "hsl": {
    "h": 232.208,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.51127,
    "c": 0.20457,
    "h": 270.7
  },
  "luminance": 0.12253
}

Semantic roles & 50–950 ramp

primary

#3F53D9

secondary

#DAD29A

accent

#D43EEA

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0A16

muted

#7E7C84

Preview Lab

Preview with #3F53D9

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →